Engineering second order nonlinear effects in optical antennas -extension of device modeling with time domain simulations of Maxwell equation.
Abstract
The main goal of the project was to explore the possibilities of accessing effective strategies to mitigate losses in sensing devices, which use the scattering from nanoparticles to boost the signal to noise ratio. The results have been obtained working in close collaboration with: Ivano Alessandri, Nicol˜ Bontempi, Luca Carletti and Andrea Locatelli (University of Brescia, Brescia - Italy); Maria Antonietta Vincenti, Domenico de Ceglia and Mike Scalora (Charles M. Bowden Research Center, AMRDEC, RDECOM, Redstone Arsenal, Alabama 35898-5000, USA). The first part of the project dealt with second harmonic generation in the all dielectric optical antennas which were designed on the first phase and have been then realized thanks to the fruitful collaboration with the group of Professor Giuseppe Leo at the Laboratoire MatŽriaux et PhŽnom�nes Quantiques, UniversitŽ Paris Diderot. The main feature of these all dielectric antennas are the low level of losses and the possibilities of exploiting high second order volume nonlinearities. The results have been presented as an invited contribution to the SPIE Photonics West in San Francisco [1] and were first in part reported in a journal publication [2]. We have then explored all dielectric optical antennas for plasmon free SERS detection of environmental CO2. The results of this part of the project have been reported in [3] and [4]. 1. C. De Angelis, A. Locatelli, L. Carletti, D. Rocco, O. Stepanenko, G. Leo, I. Favero, A. Lemaitre, G. Marino, N. Olivier, A. V. Zayats, ÒEnhanced second-harmonic generation from magnetic resonance in AlGaAs nanoantennas,Ó SPIE Photonics West Ð San Francisco (USA) - Paper 9755-54 (Invited Paper), February 2016. 2. L. Carletti, A. Locatelli, O. Stepanenko, G. Leo, C. De Angelis, ÒEnhanced second-harmonic generation from magnetic resonance in AlGaAs nanoantennas,Ó Optics Express 23, 26544 (2015). 3. I. Alessandri, N. Bontempi, L. Carletti, C. De Angelis, ÒCore/shell dielectric colloids and metal/dielectric nanostructures: multi-purpose platforms for photon management at the nanoscale,Ó Conference on Condensed Matter Physics, Palermo, September 28 - October 2, 2015. 4. N. Bontempi, L. Carletti, C. De Angelis, I. Alessandri, ÒPlasmon-free SERS detection of environmental CO2 on TiO2 surfaces,Ó Nanoscale 8, 3226 (2016).
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 12, 2017
- Source ID
- W911NF1510359
Entities
People
- Constantino De Angelis
Organizations
- Army Contracting Command
- United States Army
- University of Brescia